6.2.1.20 Add mDNS delay option

6.2.1.20 20181028
 * Add command SetOption35 0..255 (seconds) to delay mDNS initialization to control possible Wifi connect problems

sonoff/_changelog.ino

@@ -1,11 +1,14 @@
-/* 6.2.1.19 20181023
+/* 6.2.1.20 20181028
+ * Add command SetOption35 0..255 (seconds) to delay mDNS initialization to control possible Wifi connect problems
+ *
+ * 6.2.1.19 20181023
  * Fix header file execution order by renaming user_config.h to my_user_config.h
  * Fix invalid JSON floating point result from nan (Not a Number) and inf (Infinity) into null (#4147)
  * Fix rule mqtt#connected trigger when mqtt is disabled (#4149)
  * Initial release of RF transceiving using library RcSwitch (#2702)
  * Change default OTA Url to http://thehackbox.org/tasmota/release/sonoff.bin (#4170)
  * Add Tuya Software Serial to support additional Tuya configurations (#4178)
- * Add sonoff-basic.bin without most sensors
+ * Add define USE_BASIC for selecting image sonoff-basic without most sensors
  *
  * 6.2.1.18 20181019
  * Add more API callbacks and document API.md

sonoff/sonoff.h

@@ -202,7 +202,7 @@ enum ButtonStates { PRESSED, NOT_PRESSED };
 
 enum Shortcuts { SC_CLEAR, SC_DEFAULT, SC_USER };
 
-enum SettingsParmaIndex {P_HOLD_TIME, P_MAX_POWER_RETRY, P_TUYA_DIMMER_ID, P_MAX_PARAM8};
+enum SettingsParmaIndex {P_HOLD_TIME, P_MAX_POWER_RETRY, P_TUYA_DIMMER_ID, P_MDNS_DELAYED_START, P_MAX_PARAM8};  // Max is PARAM8_SIZE (18)
 
 enum DomoticzSensors {DZ_TEMP, DZ_TEMP_HUM, DZ_TEMP_HUM_BARO, DZ_POWER_ENERGY, DZ_ILLUMINANCE, DZ_COUNT, DZ_VOLTAGE, DZ_CURRENT, DZ_AIRQUALITY, DZ_MAX_SENSORS};
 

sonoff/sonoff.ino

@@ -186,6 +186,7 @@ byte reset_web_log_flag = 0;                // Reset web console log
 byte devices_present = 0;                   // Max number of devices supported
 byte seriallog_level;                       // Current copy of Settings.seriallog_level
 byte syslog_level;                          // Current copy of Settings.syslog_level
+byte mdns_delayed_start = 0;                // mDNS delayed start
 boolean latest_uptime_flag = true;          // Signal latest uptime
 boolean pwm_present = false;                // Any PWM channel configured with SetOption15 0
 boolean mdns_begun = false;                 // mDNS active
@@ -2580,6 +2581,7 @@ void setup()
   }
 
   baudrate = Settings.baudrate * 1200;
+  mdns_delayed_start = Settings.param[P_MDNS_DELAYED_START];
   seriallog_level = Settings.seriallog_level;
   seriallog_timer = SERIALLOG_TIMER;
 #ifndef USE_EMULATION

sonoff/sonoff_version.h

@@ -20,7 +20,7 @@
 #ifndef _SONOFF_VERSION_H_
 #define _SONOFF_VERSION_H_
 
-#define VERSION            0x06020113
+#define VERSION            0x06020114
 
 #define D_PROGRAMNAME      "Sonoff-Tasmota"
 #define D_AUTHOR           "Theo Arends"

sonoff/support.ino

@@ -715,7 +715,6 @@ boolean GetUsedInModule(byte val, uint8_t *arr)
   if (GPIO_RFRECV == val) { return true; }
 #endif
 
-
   if ((val >= GPIO_REL1) && (val < GPIO_REL1 + MAX_RELAYS)) {
     offset = (GPIO_REL1_INV - GPIO_REL1);
   }
@@ -1558,19 +1557,29 @@ void WifiCheck(uint8_t param)
           ota_state_flag = 3;
         }
 #endif  // BE_MINIMAL
+
 #ifdef USE_DISCOVERY
         if (!mdns_begun) {
-          mdns_begun = MDNS.begin(my_hostname);
-          snprintf_P(log_data, sizeof(log_data), PSTR(D_LOG_MDNS "%s"), (mdns_begun) ? D_INITIALIZED : D_FAILED);
-          AddLog(LOG_LEVEL_INFO);
+          if (mdns_delayed_start) {
+            AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_MDNS D_ATTEMPTING_CONNECTION));
+            mdns_delayed_start--;
+          } else {
+            mdns_delayed_start = Settings.param[P_MDNS_DELAYED_START];
+            mdns_begun = MDNS.begin(my_hostname);
+            snprintf_P(log_data, sizeof(log_data), PSTR(D_LOG_MDNS "%s"), (mdns_begun) ? D_INITIALIZED : D_FAILED);
+            AddLog(LOG_LEVEL_INFO);
+          }
         }
 #endif  // USE_DISCOVERY
+
 #ifdef USE_WEBSERVER
         if (Settings.webserver) {
           StartWebserver(Settings.webserver, WiFi.localIP());
 #ifdef USE_DISCOVERY
 #ifdef WEBSERVER_ADVERTISE
-          MDNS.addService("http", "tcp", WEB_PORT);
+          if (mdns_begun) {
+            MDNS.addService("http", "tcp", WEB_PORT);
+          }
 #endif  // WEBSERVER_ADVERTISE
 #endif  // USE_DISCOVERY
         } else {
@@ -1580,12 +1589,14 @@ void WifiCheck(uint8_t param)
         if (Settings.flag2.emulation) { UdpConnect(); }
 #endif  // USE_EMULATION
 #endif  // USE_WEBSERVER
+
 #ifdef USE_KNX
         if (!knx_started && Settings.flag.knx_enabled) {
           KNXStart();
           knx_started = true;
         }
 #endif  // USE_KNX
+
       } else {
         WifiState(0);
 #if defined(USE_WEBSERVER) && defined(USE_EMULATION)
@@ -1646,38 +1657,6 @@ void EspRestart()
   ESP.restart();
 }
 
-#ifdef USE_DISCOVERY
-/*********************************************************************************************\
- * mDNS
-\*********************************************************************************************/
-
-#ifdef MQTT_HOST_DISCOVERY
-boolean MdnsDiscoverMqttServer()
-{
-  if (!mdns_begun) {
-    return false;
-  }
-
-  int n = MDNS.queryService("mqtt", "tcp");  // Search for mqtt service
-
-  snprintf_P(log_data, sizeof(log_data), PSTR(D_LOG_MDNS D_QUERY_DONE " %d"), n);
-  AddLog(LOG_LEVEL_INFO);
-
-  if (n > 0) {
-    // Note: current strategy is to get the first MQTT service (even when many are found)
-    snprintf_P(Settings.mqtt_host, sizeof(Settings.mqtt_host), MDNS.IP(0).toString().c_str());
-    Settings.mqtt_port = MDNS.port(0);
-
-    snprintf_P(log_data, sizeof(log_data), PSTR(D_LOG_MDNS D_MQTT_SERVICE_FOUND " %s, " D_IP_ADDRESS " %s, " D_PORT " %d"),
-      MDNS.hostname(0).c_str(), Settings.mqtt_host, Settings.mqtt_port);
-    AddLog(LOG_LEVEL_INFO);
-  }
-
-  return n > 0;
-}
-#endif  // MQTT_HOST_DISCOVERY
-#endif  // USE_DISCOVERY
-
 /*********************************************************************************************\
  * Basic I2C routines
 \*********************************************************************************************/

sonoff/xdrv_02_mqtt.ino

@@ -197,6 +197,32 @@ void MqttLoop()
 
 /*********************************************************************************************/
 
+#ifdef USE_DISCOVERY
+#ifdef MQTT_HOST_DISCOVERY
+boolean MqttDiscoverServer()
+{
+  if (!mdns_begun) { return false; }
+
+  int n = MDNS.queryService("mqtt", "tcp");  // Search for mqtt service
+
+  snprintf_P(log_data, sizeof(log_data), PSTR(D_LOG_MDNS D_QUERY_DONE " %d"), n);
+  AddLog(LOG_LEVEL_INFO);
+
+  if (n > 0) {
+    // Note: current strategy is to get the first MQTT service (even when many are found)
+    snprintf_P(Settings.mqtt_host, sizeof(Settings.mqtt_host), MDNS.IP(0).toString().c_str());
+    Settings.mqtt_port = MDNS.port(0);
+
+    snprintf_P(log_data, sizeof(log_data), PSTR(D_LOG_MDNS D_MQTT_SERVICE_FOUND " %s, " D_IP_ADDRESS " %s, " D_PORT " %d"),
+      MDNS.hostname(0).c_str(), Settings.mqtt_host, Settings.mqtt_port);
+    AddLog(LOG_LEVEL_INFO);
+  }
+
+  return n > 0;
+}
+#endif  // MQTT_HOST_DISCOVERY
+#endif  // USE_DISCOVERY
+
 int MqttLibraryType()
 {
   return (int)MQTT_LIBRARY_TYPE;
@@ -468,9 +494,7 @@ void MqttReconnect()
 #ifndef USE_MQTT_TLS
 #ifdef USE_DISCOVERY
 #ifdef MQTT_HOST_DISCOVERY
-  if (!strlen(Settings.mqtt_host)) {
-    MdnsDiscoverMqttServer();
-  }
+  if (!strlen(Settings.mqtt_host) && !MqttDiscoverServer()) { return; }
 #endif  // MQTT_HOST_DISCOVERY
 #endif  // USE_DISCOVERY
 #endif  // USE_MQTT_TLS
@@ -539,6 +563,13 @@ void MqttCheck()
     if (!MqttIsConnected()) {
       global_state.mqtt_down = 1;
       if (!mqtt_retry_counter) {
+#ifndef USE_MQTT_TLS
+#ifdef USE_DISCOVERY
+#ifdef MQTT_HOST_DISCOVERY
+        if (!strlen(Settings.mqtt_host) && !mdns_begun) { return; }
+#endif  // MQTT_HOST_DISCOVERY
+#endif  // USE_DISCOVERY
+#endif  // USE_MQTT_TLS
         MqttReconnect();
       } else {
         mqtt_retry_counter--;